In my Factory Image Restore thread, follow the link to the factory images at Google (I have to update the direct download link). Download the 4.1.2 image for the Nexus 7, which I believe has been posted. Unzip the file and the zipped file within. Look for the file called boot.img - this is the stock kernel. Then boot your device to the bootloader and flash it via fastboot using the command:
fastboot flash boot boot.img
Thank you so much!! I updated too 4.1.2 then flashed the Trinity kernel I was using and now I am having a problem with battery life and one time it would not wake up
Thank you so much!! I updated too 4.1.2 then flashed the Trinity kernel I was using and now I am having a problem with battery life and one time it would not wake up